He supy
just to add something procedure wise, (from emb145 procedures)
In IMC conditions (so during CAT II or CAT IIIa approaches) we have the procedure during engine failure above 1500' RA approach may be continued to CATI/II/III minima (this in case of a HUGS approach. Below 1500' RA perform immediate go-around unless visual contact has been established.
So in general:
In the event of an a/c malfunction occurring during IMC app below 1500 ft GND requiring action by the flight crew, the approach shall normally be discontinued. If a continuation of the app seems more favorable (e.g. engine fire) the decision lies with the commander and shall be based on common sense and good airmanship....